Market comparison

Massachusetts's 9th District margin of victory

2 venues · 18 outcome rows · 0 comparable lines · event identity linked · 0 verified parity · active

Polymarket

Open venue ↗

12 outcomes · $15K reported volume

Observed 37s ago

Recorded venue end date: Nov 4, 2026

Kalshi

Open venue ↗

9 outcomes · $2K reported volume

Observed 37s ago

Recorded venue end date: Nov 3, 2027

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These venues also report end dates more than 48 hours apart; event identity does not mean the contracts close or settle together. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

No shared outcome identities or comparable outcome lines are available for this event. Each venue’s outcomes are listed separately.

Available outcome prices by venue for Massachusetts's 9th District margin of victory
Outcome	Polymarket	Kalshi	Difference
Democrat 0-5% Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Democrat 0-5% Open Polymarket ↗	—	—
Democrat 5-10% Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Democrat 5-10% Open Polymarket ↗	—	—
Democrat 10-15% Not aligned No persisted outcome identity connects these venue contracts.	6.1% Bid 1.5% · Ask 10.7% Democrat 10-15% Open Polymarket ↗	—	—
Democrat 15-20% Not aligned No persisted outcome identity connects these venue contracts.	8.5% Bid 2.0% · Ask 15.0% Democrat 15-20% Open Polymarket ↗	—	—
Democrat 20-25% Not aligned No persisted outcome identity connects these venue contracts.	23.0% Bid 19.0% · Ask 27.0% Democrat 20-25% Open Polymarket ↗	—	—
Democrat 25-30% Not aligned No persisted outcome identity connects these venue contracts.	26.0% Bid 24.0% · Ask 28.0% Democrat 25-30% Open Polymarket ↗	—	—
Democrat 30-35% Not aligned No persisted outcome identity connects these venue contracts.	20.5% Bid 19.0% · Ask 22.0% Democrat 30-35% Open Polymarket ↗	—	—
Democrat 35%+ Not aligned No persisted outcome identity connects these venue contracts.	6.0% Bid 3.0% · Ask 9.0% Democrat 35%+ Open Polymarket ↗	—	—
Keating, 8+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	95.8% Bid 92.1% · Ask 99.5% Keating, 8+ pts Open Kalshi ↗	—
Keating, 11+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	90.3% Bid 90.1% · Ask 90.6% Keating, 11+ pts Open Kalshi ↗	—
Keating, 14+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	86.0% Bid 86.0% · Ask 96.4% Keating, 14+ pts Open Kalshi ↗	—
Keating, 17+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	77.0% Bid 77.0% · Ask 88.0% Keating, 17+ pts Open Kalshi ↗	—
Keating, 20+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	66.0% Bid 66.0% · Ask 77.0% Keating, 20+ pts Open Kalshi ↗	—
Keating, 23+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	52.0% Bid 52.0% · Ask 63.0% Keating, 23+ pts Open Kalshi ↗	—
Keating, 26+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	48.0% Bid 36.0% · Ask 48.0% Keating, 26+ pts Open Kalshi ↗	—
Keating, 29+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	24.0% Bid 22.0% · Ask 26.0% Keating, 29+ pts Open Kalshi ↗	—
Keating, 32+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	14.0% Bid 11.0% · Ask 14.0% Keating, 32+ pts Open Kalshi ↗	—
Republican Wins Not aligned No persisted outcome identity connects these venue contracts.	0.3% Bid 0.2% · Ask 0.3% Republican Wins Open Polymarket ↗	—	—

Democrat 0-5%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

0.1%

Bid 0.1% · Ask 0.2%

Democrat 0-5%

Open Polymarket ↗

Kalshi

—

Democrat 5-10%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

0.1%

Bid 0.1% · Ask 0.2%

Democrat 5-10%

Open Polymarket ↗

Kalshi

—

Democrat 10-15%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

6.1%

Bid 1.5% · Ask 10.7%

Democrat 10-15%

Open Polymarket ↗

Kalshi

—

Democrat 15-20%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

8.5%

Bid 2.0% · Ask 15.0%

Democrat 15-20%

Open Polymarket ↗

Kalshi

—

Democrat 20-25%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

23.0%

Bid 19.0% · Ask 27.0%

Democrat 20-25%

Open Polymarket ↗

Kalshi

—

Democrat 25-30%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

26.0%

Bid 24.0% · Ask 28.0%

Democrat 25-30%

Open Polymarket ↗

Kalshi

—

Democrat 30-35%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

20.5%

Bid 19.0% · Ask 22.0%

Democrat 30-35%

Open Polymarket ↗

Kalshi

—

Democrat 35%+

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

6.0%

Bid 3.0% · Ask 9.0%

Democrat 35%+

Open Polymarket ↗

Kalshi

—

Keating, 8+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

95.8%

Bid 92.1% · Ask 99.5%

Keating, 8+ pts

Open Kalshi ↗

Keating, 11+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

90.3%

Bid 90.1% · Ask 90.6%

Keating, 11+ pts

Open Kalshi ↗

Keating, 14+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

86.0%

Bid 86.0% · Ask 96.4%

Keating, 14+ pts

Open Kalshi ↗

Keating, 17+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

77.0%

Bid 77.0% · Ask 88.0%

Keating, 17+ pts

Open Kalshi ↗

Keating, 20+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

66.0%

Bid 66.0% · Ask 77.0%

Keating, 20+ pts

Open Kalshi ↗

Keating, 23+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

52.0%

Bid 52.0% · Ask 63.0%

Keating, 23+ pts

Open Kalshi ↗

Keating, 26+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

48.0%

Bid 36.0% · Ask 48.0%

Keating, 26+ pts

Open Kalshi ↗

Keating, 29+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

24.0%

Bid 22.0% · Ask 26.0%

Keating, 29+ pts

Open Kalshi ↗

Keating, 32+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

14.0%

Bid 11.0% · Ask 14.0%

Keating, 32+ pts

Open Kalshi ↗

Republican Wins

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

0.3%

Bid 0.2% · Ask 0.3%

Republican Wins

Open Polymarket ↗

Kalshi

—

Prices are shown as percentages of a $1 payout. “pp” means percentage points. A dash means data is unavailable.

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